A parallel plate capacitor separated by an air gap is made of 0.8 m2 tin plates and 20 mm
A parallel plate capacitor separated by an air gap is made of 0.8 m2 tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate? [Take εo = 8.85 x 10-12 Fm-1]
A parallel plate capacitor separated by an air gap is made of 0.8 m2 tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate? [Take εo = 8.85 x 10-12 Fm-1]
Explanation
Resonance occurs when an object vibrates at its natural frequency due to matching external vibrations. The amplitude becomes very large – sometimes destructively large.
Examples: pushing a swing at right moments, breaking a wine glass with sound, Tacoma Narrows Bridge collapse. Resonance amplifies energy transfer.
Musical instruments use resonance constructively. Engineers must avoid destructive resonance in structures by ensuring natural frequencies differ from likely vibration sources.